Perth
13.3 Adjustment and forfeiture of surface water allocation – irrigation scheme
Supporting information
This line item volume (6,632 ML) represents the total forfeiture of surface water allocations for the irrigation scheme in the Perth region during the 2011–12 year.
The irrigation scheme licences relate to the Harvey and Waroona irrigation districts within the Harvey Water Irrigation Area.Quantification approach
Data source
Department of Water, Water Resource Licensing database; Harvey Water, Supervisory Control and Data Acquisition system.
Provided by
Department of Water and Harvey Water.
Method
The portion of surface water allocation that has not been abstracted at the end of the 2011–12 year is forfeited, i.e. there is no carry-over of entitlements into next year's account.
The forfeiture is calculated as the total annual allocation less total allocation diversion, as shown in the following table.
|
Account |
Volume (ML) |
|
30,765 |
|
less |
24,133 |
|
|
Forfeiture on 30 June 2012 |
6,632 |
Assumptions, limitations, caveats and approximations
Nil.
Uncertainty information
The uncertainty estimate was not quantified.